Nitrogen application often dramatically increases crop yields, but N needs vary spatially across fields and landscapes. Remote sensing collects spatially dense information that may contribute to, or provide feedback about, N management decisions. There is potential to accurately predict N fertilizer need at each point in the field. This would reduce surplus N in the crop production system witho...

Résumé en anglais This paper deals with formal modelling of Petri nets including shared resources. These phenomena appear widely in the production management context, for the modelling of manufacturing cells. But, they usually cannot be formally represented in dioid algebraic structures based on sets of scalars. In this paper, we design a method to describe such a phenomenon in a dioid of inter...

Purpose: The concept of waste has been used in relation to production since the beginning of the 20th century. As it is well-known, it is a foundational notion for the Toyota Production System and its derivatives, like lean production. However, waste is not a prevalent concept in the mainstream literature on economics, operations management, construction management or management. The reasons fo...

To identify the factors contributing to the farmers’ attitude towards Integrated Pest Management (IPM) practices in rice cultivation, 158 family heads of the Farmers Field Schools (FFSs) at Godagari Upzila under Rajshahi District were chosen at random to constitute the subjects of the study. Data were collected from 5 September, 2006 to 28 January, 2007. Twenty four selected characteristics of ...

usage of inputs is one of the most important factors affecting agricultural production variations. thus, in the evaluation of production function, it is reasonable to consider the effects of inputs usage on the production fluctuation. east azerbaijan province is one of the five major producing in iran and tabriz plain and the most important region of the province for onion production. the main ...